Ok so i bought an 88 MR2 a couple of months ago for $450. It was running weird so i checked all the majors and found the injectors clogged. I cleaned the injectors and throttle body just for good luck. It runs great i can tell there is no problems with the engine. The only problem im having now is the idle. It with jump between 1500 and 2500rpm's. I went to the local toyota dealer for parts on my fx16 and talked to the guys about it. There i was told to check the cooling system. It was full of rust and dirt and grime. So i flushed it as best i could. At some point it would maintain an idle at 1500rpm's as soon as i rev it up it goes back to the iratic idle. I also replaced the mass air flow sensor with one from a fx16 cause the one on it looked like somone had been in it. I checked for vacum leaks cause the idle screw doesnt change anything when i adjust it. Im lost at what to do. I think if it keeps up im either going throught the entire cooling system to check it out or sell it but i want to drive it first.
Any help is much appreciated.
Thanx JB
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